71V2556S150PFGI8

Overview

The 71V2556S150PFGI8 is a 3.3V CMOS synchronous SRAM organized as 128K x 36 bits, providing a total storage capacity of 4.5 Mbit. It features a 150 MHz clock frequency with a 3.8 ns access time and utilizes pipelined output architecture. The device operates within a supply voltage range of 3.135V to 3.465V and supports 2.5V I/O levels. It is housed in a 100-TQFP (14x14) surface-mount package and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Eliminates dead bus cycles during read-to-write or write-to-read transitions using Zero Bus Turnaround (ZBT) technology
• Supports high-speed data transfer through a 150 MHz synchronous interface with pipelined architecture
• Provides flexible power management via separate core and I/O supply voltage requirements

Applications

• High-performance networking equipment requiring low-latency memory buffering
• Industrial control systems needing reliable real-time data processing
• Telecommunications infrastructure utilizing synchronous parallel interfaces

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the presence of lead-free compliance indicators and moisture sensitivity level ratings prior to installation. Ensure that the procurement channel provides valid traceability documentation for this discontinued part number to mitigate quality risks.

Selection Notes

Select this component when a 36-bit wide synchronous memory interface is required for specific system architectures. Consider the 150 MHz operational speed and ZBT capabilities for applications demanding efficient bus turnaround. Verify compatibility with existing 3.3V logic systems and ensure adequate thermal management for the TQFP package form factor.

Part Context

This device belongs to the Renesas 71V2556 series of synchronous SRAMs, designed for high-throughput applications. It represents a specialized solution for systems requiring wide data buses and fast access times without the complexity of asynchronous timing constraints. The series is engineered to optimize performance in embedded environments where deterministic memory behavior is critical.

Replacement Considerations

Publicly confirmed substitute part numbers include 71V2556S133PFGI and 71V3556S100PFGI8. These alternatives offer similar organizational structures but may differ in clock frequency or access time specifications. Evaluate electrical parameter compatibility before implementation.